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  1. R

    Walbro WYA troubleshooting

    My redmax recipricator will run if it gets gas. It's not getting gas through the carb. I cleaned carb with ultrasonic cleaner and rebuilt it to no avail. When I remove the throttle valve assy and crank the engine I can see exessive fuel being drawn out of the nozzle and the engine will run rich...
  2. R

    Echo blower dies when hot

    PB403T backpack blower runs fine for up to 45 min and then surges for several min and dies. Swapped carb. New intake gaskets. Swapped coil. Removed gas cap. New plug. New head gasket to replace the old one that was leaking. The cyl and piston are scarred on the intake side but the compression is...
  3. R

    Walbro/Echo "small D" adjustment

    The adjustment tool for the new "small D" adjusting screws on the Echo PB770T is not available. I want to order the screw itself so I can figure out how to make the tool. I can't find the screw in the parts breakdown. Anybody know where I can get the screw? Walbro WYK345.
  4. R

    Walbro WYK rebuild

    I'm trying to rebuild this carb for a backpack blower. The service manual says to remove the plastic plug on top of the barrel to access the inner idle needle to adjust it. There is no plastic plug on this barrel. It looks like a brass plug and it doesn't want to pop out. Is this a...
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